My 5month boy also having cough n flu...i think some sort of virus going on..i did not bring him to doc yet. Just taking care at home. So far flu recovered only left with cough. Due to their weak immue system easier for them to get sick. Go back to same doc maybe this time they can give u slighly stronger medicine. Do not ever self medicate. Just hang in there i know they are extra cranky when sick. The milk to give lesser n more frequent to prevent baby from coughing till vomit.
self medicate and observe if you think it’s the same symptoms